Nothing Special   »   [go: up one dir, main page]

1 - Introduction To Pharmaceutical Biochemistry

Download as pdf or txt
Download as pdf or txt
You are on page 1of 10

MODULE 1:

Introduction to Pharmaceutical
Biochemistry
Pharmaceutical Biochemistry
• Science concerned with the chemical basis
of life, as applied to pharmacy practice and
pharmaceutical biological sciences.

• Science concerned with the chemical


constituents of living cells and their
interactions.

• The application of chemistry to the study of


biological processes at the cellular and
molecular level.
Cells
• Basic units of life
Major Cell Types:
• Prokaryotes include bacteria; lack nucleus
and organelles
Eukaryotic Cell
Eukaryotes have a nucleus and organelles (plants,
fungi, helminths, protozoans animals)
Human Eukaryotic Cell
Plasma Membrane
Provides a barrier; contains transport and
signaling systems.
Nucleus
Contains chromosomes and the nucleolus which
is the site for RNA synthesis.
Mitochondrion
Has series of folds called cristae; for ATP
production
Rough Endoplasmic Reticulum (RER)
Covered with ribosomes
Ribosomes
Protein and RNA complex responsible for protein
synthesis. (No membranes)
Human Eukaryotic Cell
Smooth Endoplasmic Reticulum (SER)
Site for lipid synthesis and metabolism; contains
enzymes for detoxifying xenobiotics.
Golgi Apparatus
Processes proteins to mature forms.

Lysosomes
Degrades proteins and membranes in the cell, and
helps degrade materials ingested by the cell.

Peroxisomes or Microbodies
Degrade hydrogen peroxide

Cytoplasm
Houses organelles; liquid portion called cytosol
Human Eukaryotic Cell
Cytoskeleton
Protein filaments that provides shape, basis for
movement and facilitates mitosis
E.g. microtubules and microfilaments

Cellular Composition
• Biomolecules: 9%
• Water: 60-90%
• Inorganic Ions: 1%
Energy for Cells
• Cells are inherently unstable.

• Constant flow of energy prevents them from


becoming disorganized.

• Cells obtain energy mainly via oxidation of


biomolecules
Membranes
• Spontaneously formed
due to hydrophobicity

• Existing potentials
facilitate transport and
excitability

• Membrane lipids are


amphipathic due to
phospholipids.

• Others: glycolipids and


cholesterol
Membrane Proteins

• Pumps/Active Transporters

• Carriers

• Ion Channels

• Membrane fluidity is controlled by fatty acid


composition and cholesterol content.

You might also like